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* [Bug tree-optimization/35869] New: ICE in calc_dfs_tree at -O2 -gnatp after VRP optimization
@ 2008-04-08 9:25 ebotcazou at gcc dot gnu dot org
2008-04-08 9:29 ` [Bug tree-optimization/35869] " ebotcazou at gcc dot gnu dot org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: ebotcazou at gcc dot gnu dot org @ 2008-04-08 9:25 UTC (permalink / raw)
To: gcc-bugs
The to-be-attached Ada testcase exhibits a problem with the switch statement
optimization recently added to VRP:
PR tree-optimization/14495
PR tree-optimization/34793
* tree-vrp.c (struct switch_update): New structure.
(to_remove_edges, to_update_switch_stmts): New VECs.
(simplify_switch_using_ranges): New function. Remove not taken
case labels and edges.
(simplify_stmt_using_ranges): Call it.
(identify_jump_threads): Mark edges we have queued for removal
so we don't thread them.
(execute_vrp): Remove edges queued for removal, update SWITCH_STMT
case label vector.
* tree-cfg.c (group_case_labels): Deal with missing default label.
(tree_verify_flow_info): Allow missing default label.
* stmt.c (emit_case_bit_tests): Deal with NULL default_label.
(emit_case_nodes): Likewise.
(expand_case): Do not rely on the default label to be present.
* expr.c (try_casesi): Deal with NULL default_label.
(do_tablejump): Likewise.
Quick analysis posted at
http://gcc.gnu.org/ml/gcc-patches/2008-04/msg00558.html
--
Summary: ICE in calc_dfs_tree at -O2 -gnatp after VRP
optimization
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ebotcazou at gcc dot gnu dot org
GCC target triplet: i?86-*-*
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35869
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug tree-optimization/35869] ICE in calc_dfs_tree at -O2 -gnatp after VRP optimization 2008-04-08 9:25 [Bug tree-optimization/35869] New: ICE in calc_dfs_tree at -O2 -gnatp after VRP optimization ebotcazou at gcc dot gnu dot org @ 2008-04-08 9:29 ` ebotcazou at gcc dot gnu dot org 2008-04-08 9:57 ` rguenth at gcc dot gnu dot org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: ebotcazou at gcc dot gnu dot org @ 2008-04-08 9:29 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from ebotcazou at gcc dot gnu dot org 2008-04-08 09:28 ------- Created an attachment (id=15446) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=15446&action=view) Testcase. To be compiled at -O2 -gnatp for x86 targets. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35869 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/35869] ICE in calc_dfs_tree at -O2 -gnatp after VRP optimization 2008-04-08 9:25 [Bug tree-optimization/35869] New: ICE in calc_dfs_tree at -O2 -gnatp after VRP optimization ebotcazou at gcc dot gnu dot org 2008-04-08 9:29 ` [Bug tree-optimization/35869] " ebotcazou at gcc dot gnu dot org @ 2008-04-08 9:57 ` rguenth at gcc dot gnu dot org 2008-04-10 10:32 ` rguenth at gcc dot gnu dot org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu dot org @ 2008-04-08 9:57 UTC (permalink / raw) To: gcc-bugs -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC|rguenther at suse dot de | AssignedTo|unassigned at gcc dot gnu |rguenth at gcc dot gnu dot |dot org |org Status|UNCONFIRMED |ASSIGNED Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2008-04-08 09:56:22 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35869 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/35869] ICE in calc_dfs_tree at -O2 -gnatp after VRP optimization 2008-04-08 9:25 [Bug tree-optimization/35869] New: ICE in calc_dfs_tree at -O2 -gnatp after VRP optimization ebotcazou at gcc dot gnu dot org 2008-04-08 9:29 ` [Bug tree-optimization/35869] " ebotcazou at gcc dot gnu dot org 2008-04-08 9:57 ` rguenth at gcc dot gnu dot org @ 2008-04-10 10:32 ` rguenth at gcc dot gnu dot org 2008-04-11 14:15 ` rguenth at gcc dot gnu dot org 2008-04-11 14:15 ` rguenth at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu dot org @ 2008-04-10 10:32 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from rguenth at gcc dot gnu dot org 2008-04-10 10:31 ------- *** Bug 35894 has been marked as a duplicate of this bug. *** -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |marcus at jet dot franken | |dot de http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35869 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/35869] ICE in calc_dfs_tree at -O2 -gnatp after VRP optimization 2008-04-08 9:25 [Bug tree-optimization/35869] New: ICE in calc_dfs_tree at -O2 -gnatp after VRP optimization ebotcazou at gcc dot gnu dot org ` (2 preceding siblings ...) 2008-04-10 10:32 ` rguenth at gcc dot gnu dot org @ 2008-04-11 14:15 ` rguenth at gcc dot gnu dot org 2008-04-11 14:15 ` rguenth at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu dot org @ 2008-04-11 14:15 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from rguenth at gcc dot gnu dot org 2008-04-11 14:14 ------- Subject: Bug 35869 Author: rguenth Date: Fri Apr 11 14:14:04 2008 New Revision: 134197 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=134197 Log: 2008-04-11 Richard Guenther <rguenther@suse.de> PR tree-optimization/35869 * tree-vrp.c (execute_vrp): Move switch statement update after jump threading. Schedule another cfg cleanup run. * gcc.c-torture/compile/pr35869.c: New testcase. Added: trunk/gcc/testsuite/gcc.c-torture/compile/pr35869.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-vrp.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35869 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/35869] ICE in calc_dfs_tree at -O2 -gnatp after VRP optimization 2008-04-08 9:25 [Bug tree-optimization/35869] New: ICE in calc_dfs_tree at -O2 -gnatp after VRP optimization ebotcazou at gcc dot gnu dot org ` (3 preceding siblings ...) 2008-04-11 14:15 ` rguenth at gcc dot gnu dot org @ 2008-04-11 14:15 ` rguenth at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu dot org @ 2008-04-11 14:15 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from rguenth at gcc dot gnu dot org 2008-04-11 14:14 ------- Fixed. -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED Target Milestone|--- |4.4.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35869 ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2008-04-11 14:15 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2008-04-08 9:25 [Bug tree-optimization/35869] New: ICE in calc_dfs_tree at -O2 -gnatp after VRP optimization ebotcazou at gcc dot gnu dot org 2008-04-08 9:29 ` [Bug tree-optimization/35869] " ebotcazou at gcc dot gnu dot org 2008-04-08 9:57 ` rguenth at gcc dot gnu dot org 2008-04-10 10:32 ` rguenth at gcc dot gnu dot org 2008-04-11 14:15 ` rguenth at gcc dot gnu dot org 2008-04-11 14:15 ` rguenth at gcc dot gnu dot org
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